[15 POINTS AND BRAINLIST IF CORRECT ❗️] It took Laura 38 minutes to run 8 laps. Write as a rate.

a
\large \frac{38minutes}{8laps}

b
\large \frac{8laps}{38laps}

c
\large \frac{8laps}{38minutes}

d
\large \frac{8minutes}{38minutes}

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?